Who married Eugène de Beauharnais?

Eugène Rose de Beauharnais (French: [øʒɛn d(ə) boaʁnɛ]; 3 September 1781 – 21 February 1824) was a French statesman and military officer who served in the French Revolutionary and Napoleonic Wars. Through the second marriage of his mother, Joséphine de Beauharnais, he was the stepson of Napoleon Bonaparte. Under the French Empire, he also became Napoleon's adopted son (but not the heir to the imperial throne). He was Viceroy of the Kingdom of Italy under his stepfather, from 1805 to 1814, and commanded the Army of Italy during the Napoleonic Wars. Historians consider him one of Napoleon's most able relatives.

Augusta Amélie Louise de Bavière, née le 21 juin 1788 à Strasbourg et morte le 13 mai 1851 à Munich, est une princesse impériale et membre de la maison Bonaparte. Elle fut vice-reine d'Italie et puis duchesse de Leuchtenberg et princesse d'Eichstätt.

La princesse est, entre autres, la tante de l'impératrice d'Autriche « Sissi » et (par alliance) de l'empereur Napoléon III.